Organic cucumbers are 3.99 around here,lately...That seems criminal.
Celery I always try to get organic, to avoid the 33 or so pesticides, or "inputs" or whatever they call them..
Beets too should be organic (as should carrots). Otherwise, they are GM'd, mostly, as I hear it. NOT good. Green onions are one of those funny 'nothing' things that I never thought of as needing to be organic. Then, when I started buying them organic, I found I couldn't get enough of them. Something very healing in them...I think they are WELL worth the organic cost...